(1)..check out the rotate object and fix object pivot commands
(2)..check the help file on animation of 3d objects (start with play animation)
(3)..you need the texture file for the knight to be in the same folder as the model.x file, the texture file will be most likley a .dds file, you need that in the same folder as the .x model
(4)..file/new project works for me, you might want to swap to another ide (like the blue ide)
what you need to do is to use the rotate object commands to turn the object so that he is standing up, then you need to find the commands to play (for example) the walking animation, you need the texture file in the same folder as the model, and if you using Pro then you may need to use the set object specular command to see it without excessive highlighting, if you post a link to the file (if it`s still there) then i will write a simple viewer for it, if I remeber to check this post again that is
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Mentor.
PC1: P4 hyperthreading 3ghz, 1gig mem, 2x160gig hd`s, ATI radeon 9800 pro gfx, 6 way surround sound, PC2: AMD 1.2ghz, 512mb ram, FX5200 ultra gfx, stereo 16 bit soundblaster, ups.